Method of making barrels



April 22, 19 w. E. HAMACHER METHOD OF MAKING BARRELS Filed June 27, 1945INVE/V TOR l4 ////'am E hamac/zer' Patented Apr. 22, 1952 @EiFFlCEMETHOD OF MAKING BARRELS William E. Hamacher, St. Louis, Mo. ApplicationJune 27, 1945, Serial No. 601,903 I Claims.

The invention relates to containers of drum or barrel type andpreferably but not necessarily to containers made of superimposed layersof plywood. v

The main object of the invention is to sim.- plify and strengthen theend construction of a container of this general type and. to make theend construction economically. The method of carrying out the inventionand the resulting novel production is illustrated in the accompanyingdrawings in which Figure 1 is a side view of a completed container ofthe type involved.

Figure 2 is a top view of the same.

Figure 3 is a detail horizontal section drawn to an enlarged scale andtaken on the line 3-3 of Figure 1.

Figure 4 is a detail vertical section drawn to an enlarged scale andtaken on a line 4-4 of Figure 2.

Figure 5 is a vertical section corresponding generally to Figure 4 buttaken through the body of the barrel before it is finished and.illustrating a step in the manufacture of the barre Figure 6 is asimilar view illustrating another step in the manufacture of the barrel.

Figure '7 is an end view of an annulus severed from the barrel body asshown in Figure '5 and having a segment removed for purpose describedbelow.

Figure 8 is a diagrammatic illustration of a preliminary step in themanufacture of the barrel.

-The body of the barrel consists of a plurality of sheets of plywood lwhich are inserted one after another into a forming machine comprising acollapsible drum 2 and a plurality of pressure rolls 3. The rotation ofthe drum draws the sheet between the drum and the rollers and forms thesheet into a cylinder. The meeting edges of the sheet are beveled asindicated at 4 and are glued together. Then a second sheet having glueapplied to its inner face is inserted into the machine over the firstsheet and similarly rolled into a cylinder, and its ends are beveled andglued. together as indicated at 5, the joints between the successivesheets being staggered. Additional sheets are similarly added until thebody of the barrel is completed, Figure 3 showing the use of four sheetsof twoply material.

Following the forming of the body as just described, the winding drumis' contracted, the pressure rolls are released and. the barrel isremoved from the machine. Subsequently the exterior face of the barrelnear its ends is tapered as indicated by the line X (Figure 5). Then anannulus 6 is severed from each end of the barrel by cutting along theline Y. Then the exterior face of the barrel near its ends is againtapered as indicated by the line X. Then theinner face of the barrelbody near each end is beveled as indicated by the line Z which isinclined to the side of the barrel to the same angle as lines X and Xbut in the opposite direction.

A disk-like barrel head 8, preferably made of plywood, has glue appliedto its edge which is inclined to fit the beveled inner face of thebarrel and the head is inserted in the barrel body as shown in Figure 4.

A segment I (Figure 7) is removed from annulus 6 and the annulusinverted and glue applied to its outer and lower face. The annulus iscontracted to bring its ends together andis "applied to the barrel headand side as shown in Figure 4. Pressure is applied to thrust the gluedparts together and a metal hoop 9 is applied to the outer face of thebarrel and is secured by rivets ID, after which the pressure mechanismmay be removed and the barrel stood aside to dry. Openings l3 areprovided for filling and emptying the barrel with liquid for which thebarrel is particularly adapted.

With this arrangement the joint between the head and side of the barrelis tight and the head is secured in place by the annulus whichcontributes to the joint and is formed of the same material as theadjacent portion of the barrel side wall. It is unnecessary to provide ashoulder on the inner face of the barrel to seat the head, in fact thejoint formed by the beveled surfaces is tighter than if a shoulder wereprovided. The use of the end portions of the original cylindrical barrelbody for the retaining rings avoids the necessity of forming and fittingseparate retaining rings and insures the rings and barrel sides being ofmaterial of the same grade and condition and this is advantageous to thesecurity and tightness of the assembly. There are one or more layers ofglue between the exterior and interior of the barrel at all points thusavoiding crevices through which moisture may penetrate.

The details of the structure and the method of making it may be variedwithout departing from the spirit of the invention and the exclusive useof those modifications of the structureand method of making the samedescribed 3 above coming within the scope of the claims is contemplated.

What is claimed is:

1. The method of making a barrel-like container of plywood whichis'characterized by forminga cylinder, beveling the outer face of thecylinder near the end thereof, severing an annulus from the beveled endportion, beveling the inner face of the remaining portion of thecylinder near the end thereof, inserting a head within the cylinder andspaced inwardly from the end of the remaining portion of the cylinderwith its periphery fitted against the beveled inner periphery of thecylinder, removing a relatively short section of the annulus, invertingthe annulus, contracting the annulus and inserting it within the end ofthe cylinder with its beveled outer periphery fitted against the beveledinner face of the cylinder, and securing the annulus to the cylinder.

2. The method of making a barrel-like container of plywood which ischaracterized by forming a cylinder, beveling the outer face of thecylinder near the end thereof, severing an annulus by cutting throughthe beveled end portion transversely of the cylinder axis, beveling theinner face of the cylinder inwardly from the line of severance,inserting a head within the cylinder with its periphery fitting againstthe beveled inner face of the cylinder, removing a segment from theannulus, inverting the annulus and contracting it to bring its endsadjacent to each other and inserting it \vithinthe end of the cylinderagainst said head and with its beveled outer face fitted against thebeveled inner face of the cylinder and securing the annulus to thecylinder.

3. The method of making a barrel-like container of plywood which ischaracterized by forming a cylinder, bevelingthe outer face of thecylinder near the end thereof, severing an annulus from the beveled endportion by cutting through the cylinder transversely of its axis,beveling the inner face of the remaining body of the cylinder near theend thereof, inserting a head Within the cylinder with its peripheryfitting against the beveled'inner face of the body of the cylinder,removing a segment from the annulus, inverting the annulus and coatingits lower and outer faces with glue, contracting it to bring its endsadjacent to each other and inserting it within the 4 end of the body ofthe cylinder against said head and with its beveled outer face fittedagainst the beveled inner face of the body of the cylinder and applyingpressure to thrust the glue-coated parts against the opposing parts.

4. The method of making a container of the class described characterizedby forming a cylinder of successive layers of adhesive-coated plywood,floeveling the outer face of the cylinder near an end thereof, severingan end portion of the cylinder to form an annulus, removing a segmentfrom the annulus, beveling the inner face of the cylinder near the endthereof, inverting and contracting the remaining portion of the annulusand inserting it within the cylinder with the beveled outer periphery ofthe inverted annulus fitting against the beveled inner face of thecylinder, and securing the annulus to the cylinder.

5. The method of making a container of the class described characterizedby forming a container body in the shape of a cylinder, severing an endportion of the cylinder to form an annulus, applying a disc-like head tothe body with the perimeter of thehead against the inner wall of thecylinder and with the head spaced inwardly from the end of the cylinder,removing a relatively short arcuate portion of the annulus andcompressing the annulus accordingly to reduce its diameter andcircumference, applying the annulus to the outer face of the head and tothe inner Wall of the cylinder, and securing the annulus to thecylinder.

WILLIAM E. HAMACHER.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS McConnell May 1, 1945

